The Coldest Place in the Universe The coldest place in the universe, the Boomerang Nebula, is pretty extreme. Its temperature is…
The Life Cycle of a Star From nebula to protostar, through the main sequence to red giant before ending as a…
What Are Stars Made Of? Stars are made of very, very hot gases. They contain small amounts of elements like…
What Do Stars Look Like Up Close? Up close, stars look like enormous balls of brightly glowing gas, shrouded in wispy trails…